blob

I have managed objects that have image properties. Since storing large blobs in CoreData is a bad idea, I'm trying to use the built-in CoreData option " Store in External Record File " which you can see in the Data Model Inspector. Despite enabling this option, I do not see any image data being stored externally. Judging by the size, it seems like they are still being saved in the sqlite file. What is the issue? marcusg If your store type is NSSQLiteStoreType , your attribute is NSBinaryDataAttributeType . You have enabled setAllowsExternalBinaryDataStorage and your object data size is larger

实现原理：定义的接口不是下载文件的路径，而是通过API可以获得文件的内容，由前端把内容写入到文件中，这种方法是通过获取文件信息，在网页上利用click事件，创建一个文件，然后将文件信息写入到文件中，然后保存。 主要用到了JavaScript中的Blob对象和HTML5中的FileReader对象。代码如下： python/django: from django.http import HttpResponse from django.views.decorators.csrf import csrf_exempt import csv from django.http import StreamingHttpResponse #下载 @csrf_exempt def download(request): # Create the HttpResponse object with the appropriate CSV header. response = HttpResponse(content_type='text/csv') response['Content-Disposition'] = 'attachment; filename="somefilename.csv"' writer = csv.writer(response) writer.writerow([

I have a problem with BlobBuilder (Chrome11) I try to obtain an image from server with XHR request. Then i try to save it to local FS with BlobBuilder / FileWriter. Every example on the internet is about working with text/plain mime type and these examples work fine. But when i try to write binary data obtained with XHR, file size becomes about 1.5-2 times bigger than the original file size. And it cannot be viewed in Picasa / Eye Of Gnome. var xhr = new XMLHttpRequest(); var photoOrigUrl = 'http://www.google.ru/images/nav_logo72.png'; xhr.open('GET', photoOrigUrl, true); xhr

I have a file. I want to get its contents into a blob column in my oracle database or into a blob variable in my PL/SQL program. What is the best way to do that? cagcowboy To do it entirely in PL/SQL, the file would need to be on the server, located in a directory which you'd need to define in the database. Create the following objects: CREATE OR REPLACE DIRECTORY BLOB_DIR AS '/oracle/base/lobs' / CREATE OR REPLACE PROCEDURE BLOB_LOAD AS lBlob BLOB; lFile BFILE := BFILENAME('BLOB_DIR', 'filename'); BEGIN INSERT INTO table (id, your_blob) VALUES (xxx, empty_blob()) RETURNING your_blob INTO

Ever since I moved my data from ArrayList to a sqlite database on Android, I have a serious performance drop. There are no cursors left open that could cause that, so I suspect that the problem is with the images I store in a BLOB field. The application creates Cards that have a field cardBitmap that gets populated with a bitmap upon creation. Can anyone tell me from their experience, what solution is more performant: cardBitmap holds a reference (path) to a file on SDcard that will be drawn upon creation. Only path is stored in DB. cardBitmap holds an object ( BitmapFactory.decodeStream